The following guides serve as a first starting point for X3DOM users and developers.
They cover the most important aspects of setting up your environment to run an X3DOM application.
If you are really in a hurry, and maybe already a little familar with X3D, you might quickly read section 3 and one of the sub-sections of section 4 (whichever of the proposed solutions you prefer)
to set up your environment, and then directly dive into your first X3DOM application by checking out the tutorials
4. Running X3DOM Applications...